40307344425 has 18 divisors (see below), whose sum is σ = 72194932862. Its totient is φ = 21497250240.

The previous prime is 40307344421. The next prime is 40307344463. The reversal of 40307344425 is 52444370304.

40307344425 is a `hidden beast` number, since 4 + 0 + 307 + 344 + 4 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 107495424 + 40199849001 = 10368^2 + 200499^2 .

It is not a de Polignac number, because 40307344425 - 2² = 40307344421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40307344425.

It is not an unprimeable number, because it can be changed into a prime (40307344421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 89571652 + ... + 89572101.

Almost surely, 2^40307344425 is an apocalyptic number.

40307344425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40307344425 is a deficient number, since it is larger than the sum of its proper divisors (31887588437).

40307344425 is a wasteful number, since it uses less digits than its factorization.

40307344425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179143769 (or 179143761 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 36.

The spelling of 40307344425 in words is "forty billion, three hundred seven million, three hundred forty-four thousand, four hundred twenty-five".